Tool Upcycling With Tool Upcycling Out of the Tungsten Price Spiral

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FAULHABER Drive Systems

Since 2025, the APT price on the global market has risen by over 500 percent—with an upward trend. An automotive supplier found a way out of the price spiral with the special tool experts from Müller Precision Tools: tool upcycling.

Hard metal is essential for the production of tools for industrial use. Since hard metal typically consists of around 90 percent tungsten carbide and about 10 percent cobalt, rising raw material costs for APT are directly reflected in tool prices. This price spiral affects the entire value chain: from hard metal suppliers to tool manufacturers to metalworking companies. They all face the challenge of producing efficiently and sustainably to withstand increasing cost pressures. In particular, price stability and the availability of raw materials and tools along the entire chain are significantly impacted by strong fluctuations. To find a way out of this price spiral, the consistent use of tool upcycling is becoming increasingly important.

Tool Upcycling as a Strategic Lever Against Rising Raw Material Prices

Tool upcycling describes an approach where worn-out tools are not simply discarded or recycled but serve as the basis for new tools. While new tools utilize fresh, expensive hard metal, tool upcycling repurposes the existing substrate from an old, worn tool. This not only reduces dependence on volatile raw material markets but also ensures significantly higher price stability.

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Practical experience shows that, on average, up to 30 percent of the demand for new tools can be met this way. Depending on the application, process stability, and tool range, quotas of up to 50 percent are even realistic. In times of skyrocketing tungsten prices, this represents a significant economic advantage.

From Old to New: The Process Behind Tool Upcycling

Even state-of-the-art, coated precision tools are subject to natural wear during use. Initially, they can be resharpened and recoated. However, once the geometry no longer allows this, the end of their service life is reached. This is precisely where tool upcycling comes into play.

The process is clearly structured: the worn tool is returned to Müller Precision Tools. There, the unusable cutting part is removed, while the remaining intact hard metal body is reused. This body is first processed, ground to a round shape, and then ground into a new, application-specific geometry. Finally, the tool is coated, making it ready for use once again.

The result: a fully functional tool with identical performance, service life, and quality as a new tool. At the same time, the use of a new carbide blank is avoided. This creates a significant cost advantage in a strained raw material market.

Practical Example: An Internationally Operating Automotive Supplier as a Pioneer

How effective tool upcycling can be in practice is demonstrated by the example of an internationally leading automotive supplier. The company specializes in high-precision components.

The production of safety-critical components requires the highest precision and process reliability. Special tools from Müller Precision Tools, specifically tailored to the respective machining processes, are used for this purpose.

These tools are characterized by particularly high service lives—a crucial factor for machining efficiency. Every tool change means downtime, setup effort, and potential quality fluctuations. Through customized geometries and innovative coating solutions, the service life has, in some cases, even been doubled compared to standard tools.

But even here, the same rule applies: at some point, even the best tool wears out. After several regrinding cycles, the original geometry can no longer be restored. This is the point where a new tool would normally need to be procured.

Together with Müller, the company decided to rethink this point. Instead of scrapping worn tools, a systematic tool upcycling process was established.

Tools that can no longer be resharpened are collected, analyzed, and used as the basis for new tools. The process follows the previously described procedure: removing the worn area, processing the remaining carbide, creating a new geometry, and applying a coating afterward.

This approach creates a closed material cycle in which the used hard metal remains in operation significantly longer. This not only reduces the demand for new raw materials but also significantly increases resource efficiency. Originally, the goal of tool upcycling was to reduce CO₂ emissions in the supply chain, as the production of hard metal blanks is highly emission-intensive.

Measurable Advantages: Cost, Availability, and Sustainability

The introduction of tool upcycling brings several measurable advantages for the company. Since no new carbide blanks are required, the manufacturing costs for upcycled tools are significantly lower. This effect has an immediate positive impact on operating costs, especially in times of volatile or rising tungsten prices.

The volatility of raw material prices becomes less significant, as a large portion of the material comes from the company's own cycle. This ensures greater planning reliability and more stable purchasing prices.

Since the material base is already available, delivery times are shortened. This reduces the risk of machine downtime and increases production security.

A crucial point for practical application: upcycled tools offer the same service life and performance as new tools. These tools can also be resharpened again, further extending their lifecycle.

A particularly impressive effect is seen in the area of sustainability. Producing one kilogram of carbide typically generates between 30 and 50 kilograms of CO₂. By avoiding new material, up to 14 tons of CO₂ could be saved annually in the described practical example.

Maximum Resource Utilization through Extended Lifecycles

Another advantage of tool upcycling lies in the consistent use of existing material. Depending on the initial length and geometry of a tool, several new tools can be created from a single carbide body, each tailored to different applications.

With each upcycling cycle, the overall length of the tool is reduced, but the lifecycle only ends when the remaining material becomes too small. Until then, the maximum is extracted from the raw material used without compromising on quality or performance.

This consistent extension of the lifecycle stands in direct contrast to the traditional linear use of resources and is a central component of modern, sustainable production strategies.

Tool upcycling as a competitive advantage in uncertain times

The combination of rising raw material prices, increasing cost pressures, and growing demands for sustainability is forcing companies to rethink. Tool upcycling provides a holistic approach that combines economic and ecological advantages.

Especially in the current market situation, where tungsten has become a critical and expensive raw material, tool upcycling is evolving from an optional approach to a strategic competitive factor. Companies that adopt this concept early benefit not only from lower costs but also from more stable processes and an improved CO₂ balance.

From Cost Driver to Opportunity

The drastically increased tungsten prices present significant challenges for the tool industry. At the same time, they also open up new opportunities. Tool upcycling impressively demonstrates how a sustainable competitive advantage can be developed from a crisis.

Through the intelligent reuse of hard metal, companies can reduce their dependence on raw material markets, lower costs, and at the same time make an important contribution to climate protection. The practical example from the automotive supplier industry illustrates that this concept not only works in theory but is already successfully applied in industrial practice today.

This makes it clear: tool upcycling is far more than a short-term response to rising prices—t is a forward-looking approach for more resilient, efficient, and sustainable production.